Possible models for the type IA supernova 1990N

Details Possible models for the type IA supernova 1990N Possible models for the type IA supernova 1990N

Feb 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992apj...386l..13s&link_type=abstract

Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X), vol. 386, Feb. 10, 1992, p. L13-L16.

Astronomy and Astrophysics

Astrophysics

48

Nuclear Reactions, Red Shift, Stellar Models, Stellar Spectrophotometry, Supernovae, White Dwarf Stars, Calcium, Hubble Constant, Light Curve, Silicon, Stellar Mass

Scientific paper

Possible interpretations of new spectral and photometric features of type Ia supernova 1990N with carbon deflagration/detonation models are presented. To explain the presence of Si and Ca at high expansion velocities in SN 1990N, four possible models are suggested, among which is a carbon detonation in a white dwarf with a mass about 1 solar mass. The slow rise of the light curve of SN 1990N can be reproduced by both the deflagration and detonation models if the optical opacity is somewhat larger than that previously adopted. Implications for the Hubble constant are discussed.

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